Pursuing Mirror Image Reconstruction in Unilateral Microtia: Customizing Auricular Framework by Application of Three-Dimensional Imaging and Three-Dimensional Printing

Chen, Hsin-Yu; Ng, L.S.; Chang, Chun‐Shin; Lu, Ting-Chen; Chen, Ning‐Hung; Chen, Zung-Chung

doi:10.1097/prs.0000000000003374

Cited by 42 publications

(19 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Despite several reports on different models and designs of 3D-printed ear models, 8 9 10 11 12 their clinical application has seldom been introduced as the previously reported 3D-printed scaffolds were difficult for clinical application. Simply designed “identical” ear models can cause difficulties in real operative fields, since the implantation procedure may cause harm to the vascularity of the skin flap by harming the subcutaneous pedicle emphasized for blood supply in Nagata’s method.…”

Section: Discussionmentioning

confidence: 99%

“…Since most patients have unilateral microtia, a 3D-printed framework could be designed based on the contralateral unaffected ear. Several reports have been published regarding the 3D printing techniques used for ear reconstruction; 8 9 10 11 12 however, most remain at an experimental stage or are focused on developing 3D printing materials.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Fabrication of 3D-Printed Implant for Two-Stage Ear Reconstruction Surgery and Its Clinical Application

Joo

Kim

et al. 2023

Yonsei Med J

View full text Add to dashboard Cite

Purpose Ear reconstruction is one of the most difficult areas in the field of reconstructive surgery. Due to limitations of the current practice, a novel method of auricular reconstruction is needed. Major advancements in three-dimensional (3D) printing technique have rendered the process of ear reconstruction more favorable. Herein, we present our experience in designing and clinically using 3D implants in both 1st and 2nd stage ear reconstruction surgery. Materials and Methods After obtaining 3D CT data from each patient, a 3D geometric ear model was created using mirroring and segmentation processes. The 3D-printed implant design resembles but does not exactly match the normal ear shape, and can be inserted in harmony with the currently used surgical technique. The 2nd stage implant was designed to minimize dead space and support the posterior ear helix. The 3D implants were finally fabricated with a 3D printing system and used in ear reconstruction surgery in our institute. Results The 3D implants were manufactured for application to the currently used two-stage technique while maintaining the shape of the patient’s normal ear. The implants were successfully used for ear reconstruction surgery in microtia patients. A few months later, the 2nd stage implant was used in the 2nd stage operation. Conclusion The authors were able to design, fabricate, and apply patient-specific 3D-printed ear implants for 1st and 2nd stage ear reconstruction surgeries. This design, combined with 3D bioprinting technique, may be a future alternative for ear reconstruction.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Fabrication of 3D-Printed Implant for Two-Stage Ear Reconstruction Surgery and Its Clinical Application

Joo

Kim

et al. 2023

Yonsei Med J

View full text Add to dashboard Cite

show abstract

“…By augmenting conventional teaching with the use of high-fidelity 3D printed ears, the participants were able to effectively visualize and recreate the individual components for autologous ear reconstruction using the Firmin technique ( Figure 4 ). The use of 3D carved wax models as an adjunct to ear reconstruction teaching and surgical planning has been previously explored by Chen et al ( 29 ), who has more recently used 3D printed ears derived from imaging data to produces templates for intraoperative planning ( 30 , 31 ). 3D printing the ear separated into its component parts in this study, however, enabled participants to hold and compare their carved pieces directly to an ideal design, gaining a better appreciation how the separate components organize into a 3D auricle.…”

Section: Discussionmentioning

confidence: 99%

Using 3D Printing Technology to Teach Cartilage Framework Carving for Ear Reconstruction

et al. 2020

View full text Add to dashboard Cite

The aim of this study was to determine the validity of using a carvable 3D printed rib model in combination with a 3D printed auricular framework to facilitate the teaching, training and planning of auricular reconstruction. Design: 3D printed costal cartilages from ribs 6-9 were produced using a FormLabs Form3 Printer and used to make negative molds. 2:1 silicone-cornstarch mixture was added to each mold to make 12 simulated 6-9th costal cartilages suitable for carving. 3D printed auricular frameworks were produced in polylactic acid using an Ultimaker 3 3D printer to demonstrate the component parts and constructed framework of an auricular reconstruction. Participants: Twelve plastic surgery trainees attended a workshop in which they each attempted auricular reconstruction using the carvable models and 3D printed plastic models as a guide. All candidates completed a pre-and post-training questionnaire to assess confidence and comprehension of auricular reconstruction, and the suitability of the models for facilitating this teaching. Results: Only 42% of trainees (n = 5) had observed an ear reconstruction in theater prior to the training course. Statistically significant improvements in the appreciation of the different components that make an auricular framework (p < 0.0001) and confidence in carving and handling costal cartilage (p < 0.0001) were noted following completion of the training. Highly significant improvements in comprehension of the approach to ear reconstruction (p = 0.006) and locating the subunits of a reconstructed ear from costal cartilage (p = 0.003) were also noted. 100% of participants felt the 3D printed teaching aids directly enhanced their learning. Conclusions: Ear reconstruction is a complex, time consuming multi-stage operation demanding significant amounts of experience, planning and an appreciation of the 3D chondrocutaneous structure. In this study we have demonstrated the value of 3D printing in producing a suitable simulated costal cartilage model and as an adjunct to comprehending and planning a framework for auricular reconstruction.

show abstract

“…Symmetry and similarity of the left and right auricles play an important role in getting better correction outcome for CAD. Chen et al [11] reported that his team used three-dimensional (3D) technique in surgical reconstruction of unilateral microtia. By using the 3D technique, a mirror-image framework in high precision of normal auricle implant was produced, thus providing a better symmetry and aesthetic plastic effect.…”

Section: Introductionmentioning

confidence: 99%

3D Technique-Based Nonsurgical Correction of Deformational Congenital Auricular Deformities

Zhu

Zhou

Zhao

et al. 2021

ORL

View full text Add to dashboard Cite

Introduction: Congenital auricular deformity (CAD) is a common postpartum deformity, and nonsurgical correction of CAD has been recognized as a safe and effective approach. Three-dimensional (3D) technique has been used in surgical reconstruction of unilateral microtia; however, 3D technique used in nonsurgical correction for deformational CAD has not been reported. Methods: In this study, 12 CAD patients aged from 0.6 to 7 months with 16 deformational CAD were treated with 3D technique-based personalized nonsurgical correction (3D-NSC). Patients’ CAD was photographed pre- and post-correction, and clinical outcome was evaluated as poor, fair, good, and excellent by comparing pre- and post-correction pictures. Different kinds of tests were used to analyze the data. Results: All patients got an improved auricle shape (10 excellent, 2 good, and 4 fair). Multivariate regression analysis showed that CAD type was significantly associated with correction outcome, sex and age were significantly associated with correction outcome for the 11 constructed types of CAD, and age was significantly associated with the correction outcome when we focused on the male constructed auricles. Conclusion: 3D-NSC provided a significant nonsurgical clinical treatment for CAD patients, with younger patients getting better clinical outcomes with shorter correction time.

show abstract

Pursuing Mirror Image Reconstruction in Unilateral Microtia: Customizing Auricular Framework by Application of Three-Dimensional Imaging and Three-Dimensional Printing

Abstract: Therapeutic, IV.

Cited by 42 publications

References 28 publications

Fabrication of 3D-Printed Implant for Two-Stage Ear Reconstruction Surgery and Its Clinical Application

Fabrication of 3D-Printed Implant for Two-Stage Ear Reconstruction Surgery and Its Clinical Application

Using 3D Printing Technology to Teach Cartilage Framework Carving for Ear Reconstruction

3D Technique-Based Nonsurgical Correction of Deformational Congenital Auricular Deformities

Contact Info

Product

Resources

About